#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
ifstream in("inversmodular.in");
ofstream out("inversmodular.out");

ll exp_log(ll x, ll n, ll m)
{
    if(n == 0) return 1;
    if(n%2) return x*exp_log(x*x%m, n/2, m)%m;
    return exp_log(x*x%m, n/2,m);
}

int main()
{
    ll a, m, p;
    in >> a >> p;
    m = p;
    out << exp_log(a, p-2, m);



    return 0;
}